2267490

Information

• Patent Grant
• 2267490

• References
• Source

• Patent Number

  2,267,490

• Date Filed

  Not available

• Date Issued

  Tuesday, December 23, 1941
  83 years ago

• CPC

  • C01F7/28 - with sulfurous acid

• US Classifications

  • 423 - Chemistry of inorganic compounds